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Core Java - Interview Questions and Answers for 'Byte code' - 4 question(s) found - Order By Newest

 Q1. What is Byte Code ? Why Java's intermediary Code is called Byte Code ?
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Ans. Bytecode is a highly optimized set of instructions designed to be executed by the Java run-time system. Its called Byte Code because each instruction is of 1-2 bytes.

Sample instructions in Byte Code -

1: istore_1
2: iload_1
3: sipush 1000
6: if_icmpge 44
9: iconst_2
10: istore_2

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   Like         Discuss         Correct / Improve     java   jvm   interpreter   platform independent   byte code


 Q2. Difference between PATH and CLASSPATH ?Operating System
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Ans. PATH is the variable that holds the directories for the OS to look for executables. CLASSPATH is the variable that holds the directories for JVM to look for .class files ( Byte Code ).

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   Like         Discuss         Correct / Improve     java   path   classpath   byte code   jvm   basic interview question     Asked in 3 Companies      intermediate        rare


 Q3. What is meant Java is "Write Once Run Anywhere" ?Core Java2017-05-07 15:14:51

Ans. It means that Java is compiled to byte code that is platform independent and hence can be run anywhere or any machine.

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   Like         Discuss         Correct / Improve     Write Once Run Anywhere  byte code  platform independent


 Q4. Does Java generate .class file for interfaces ? Core Java2018-07-20 18:20:53

Ans. Yes

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   Like         Discuss         Correct / Improve     .class file  java byte code  interfaces



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